<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>用户登录</h1>
    <form method="post" action="/login/">
        {% csrf_token %}
        <input type="text" name="user" placeholder="用户名">
        <input type="password" name="password" placeholder="密码">
        <input type="submit" value="登录">
        <span style="color: red">{{ error_message }}</span>
    </form>
</body>
</html>